EN 1744-1:2009+A1:2012
(Main)Tests for chemical properties of aggregates - Part 1: Chemical analysis
Tests for chemical properties of aggregates - Part 1: Chemical analysis
This European Standard specifies procedures for the chemical analysis of aggregates. It specifies the reference procedures and, in certain cases, an alternative method which can be considered as giving equivalent results.
Unless otherwise stated, the test methods specified in this standard may be used for factory production control, for audit tests or for type tests.
This standard describes the reference methods used for type testing and in cases of dispute (and alternatives methods) for chemical analyses of aggregates. For the purpose of type testing and in cases of dispute only the reference method should be used. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.
Prüfverfahren für chemische Eigenschaften von Gesteinskörnungen - Teil 1: Chemische Analyse
Diese Europäische Norm legt Verfahren für die chemische Analyse von Gesteinskörnungen fest. Sie legt die Referenzverfahren und in bestimmten Fällen ein Alternativverfahren fest, dessen Ergebnisse als gleichwertig zu denen des Referenzverfahrens angesehen werden.
Sofern nicht anders festgelegt, dürfen die in dieser Norm festgelegten Prüfverfahren für die werkseigene Produktionskontrolle, für Audits oder für Erstprüfungen angewendet werden.
Diese Norm beschreibt für die chemische Analyse von Gesteinskörnungen die für die Erstprüfung und in Streitfällen anzuwendenden Referenzverfahren (sowie Alternativverfahren). Für die Erstprüfung und in Streit-fällen sollte nur das Referenzverfahren angewendet werden. Für andere Zwecke, speziell im Rahmen der werkseigenen Pro¬duktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang zum Referenzverfahren nachgewiesen wurde.
Essais visant à déterminer les propriétés chimiques des granulats - Partie 1: Analyse chimique
La présente Norme européenne décrit les modes opératoires pour l’analyse chimique des granulats. Elle décrit les modes opératoires de référence et dans certains cas, une méthode alternative donnant des résultats similaires.
Sauf prescription, les méthodes d’essais décrits dans cette norme peuvent être utilisées pour le contrôle de fabrication en usine, pour des essais d’audit ou des essais de type.
Cette norme décrit les méthodes de référence utilisées pour les essais de type et en cas de litige (ainsi que les méthodes alternatives), pour l'analyse chimique des granulats. Pour les essais de type et en cas de litige, seule la méthode de référence sera utilisée. Lorsque d'autres objectifs sont visés, en particulier le contrôle de fabrication en usine, d'autres méthodes peuvent être utilisées, à condition que des corrélation appropriées avec la méthode de référence aient été établies.
Preskusi kemičnih lastnosti agregatov - 1. del: Kemijska analiza
Ta evropski standard določa postopke za kemijsko analizo agregatov. Določa referenčne postopke in v nekaterih primerih alternativno metodo, s katero lahko pridobimo enakovredne rezultate. Če ni navedeno drugače, se lahko preskusne metode iz tega standarda uporabljajo za kontrolo proizvodnje v obratu, zunanje kontrolne preskuse ali tipske preskuse. Ta standard opisuje referenčne metode, ki se uporabljajo za tipsko preskušanje in v primerih spora (in alternativnih metod) za kemijsko analizo agregatov. Za namen tipskega preskušanja in v primerih spora naj bi se uporabljala le referenčna metoda. Za druge namene, zlasti za kontrolo proizvodnje v obratu, se lahko uporabijo druge metode, če obstaja primerna delovna povezava z referenčno metodo.
General Information
- Status
- Published
- Publication Date
- 27-Nov-2012
- Withdrawal Date
- 30-May-2013
- Technical Committee
- CEN/TC 154 - Aggregates
- Drafting Committee
- CEN/TC 154/SC 6 - Test methods
- Current Stage
- 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
- Start Date
- 12-Apr-2021
- Completion Date
- 14-Apr-2025
Relations
- Merged From
EN 1744-1:2009/FprA1 - Tests for chemical properties of aggregates - Part 1: Chemical analysis - Effective Date
- 19-Jan-2023
- Effective Date
- 19-Jan-2023
Overview
EN 1744-1:2009+A1:2012 - Tests for chemical properties of aggregates (Part 1: Chemical analysis) is a European standard that specifies reference procedures and accepted alternative methods for the chemical analysis of aggregates. It covers sampling, preparation of test portions, reagents, apparatus, test procedures and expression of results for a range of chemical determinations. The standard is intended for type testing and dispute resolution (reference methods mandatory) and can also be used for factory production control, audit tests or routine testing where an appropriate relationship to the reference method has been established.
Key topics and technical requirements
- Scope and application: Defines when reference vs. alternative methods must be used (type testing/dispute vs. factory production control).
- Reagents and apparatus: Lists required chemicals and laboratory equipment specific to each chemical test.
- Sampling and sample preparation: Procedures for representative sampling, drying and extraction of aggregates prior to analysis.
- Chloride determination: Water-soluble chloride methods including the Volhard (reference) method, potentiometric (alternative) and Mohr (factory control) method.
- Sulfate and sulfur tests: Water-soluble sulfates, acid-soluble sulfates, total sulfur (acid digestion reference and high-temperature combustion alternative).
- Sulfide determination: Acid-soluble sulfide content and procedures to detect potentially reactive sulfide particles.
- Organic and contaminant tests: Tests for humus, fulvo acids, organic contaminants and lightweight contaminators that affect concrete surface finish.
- Free lime and slag assessments: Methods for free CaO determination (complexometry, conductometry, acidimetry) and procedures for assessing expansion potential of steel and blast-furnace slags.
- Quality aspects: Repeatability/reproducibility, expression of mass/volume, treatment of results and special checks (e.g., AgNO3 chloride absence test).
Practical applications and who uses it
- Aggregate producers and quarry operators: To validate product quality and demonstrate compliance with chemical acceptance criteria.
- Construction material laboratories and testing facilities: For type testing, dispute resolution and establishing factory production control methods referenced to the standard.
- Civil and structural engineers, specifiers and contractors: To assess suitability of aggregates for concrete and asphalt, mitigating risks from chlorides, sulfates, sulfides, free lime or deleterious organics.
- Regulators and certification bodies: For conformity assessment, audits and standardised reporting of chemical properties.
Related standards and references
- The standard is published under CEN and adopted nationally (SIST). For broader conformity and performance requirements consult other EN and national standards on aggregate properties and concrete materials; check CEN listings for related parts and updates.
Keywords: EN 1744-1:2009+A1:2012, EN 1744-1, chemical analysis of aggregates, water-soluble chloride, sulfate testing, total sulfur, factory production control, reference methods, Volhard, potentiometry, Mohr.
Frequently Asked Questions
EN 1744-1:2009+A1:2012 is a standard published by the European Committee for Standardization (CEN). Its full title is "Tests for chemical properties of aggregates - Part 1: Chemical analysis". This standard covers: This European Standard specifies procedures for the chemical analysis of aggregates. It specifies the reference procedures and, in certain cases, an alternative method which can be considered as giving equivalent results. Unless otherwise stated, the test methods specified in this standard may be used for factory production control, for audit tests or for type tests. This standard describes the reference methods used for type testing and in cases of dispute (and alternatives methods) for chemical analyses of aggregates. For the purpose of type testing and in cases of dispute only the reference method should be used. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.
This European Standard specifies procedures for the chemical analysis of aggregates. It specifies the reference procedures and, in certain cases, an alternative method which can be considered as giving equivalent results. Unless otherwise stated, the test methods specified in this standard may be used for factory production control, for audit tests or for type tests. This standard describes the reference methods used for type testing and in cases of dispute (and alternatives methods) for chemical analyses of aggregates. For the purpose of type testing and in cases of dispute only the reference method should be used. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.
EN 1744-1:2009+A1:2012 is classified under the following ICS (International Classification for Standards) categories: 91.100.15 - Mineral materials and products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1744-1:2009+A1:2012 has the following relationships with other standards: It is inter standard links to EN 1744-1:2009/FprA1, EN 1744-1:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1744-1:2009+A1:2012 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfverfahren für chemische Eigenschaften von Gesteinskörnungen - Teil 1: Chemische AnalyseEssais visant à déterminer les propriétés chimiques des granulats - Partie 1: Analyse chimiqueTests for chemical properties of aggregates - Part 1: Chemical analysis91.100.15Mineralni materiali in izdelkiMineral materials and products71.040.40Kemijska analizaChemical analysisICS:Ta slovenski standard je istoveten z:EN 1744-1:2009+A1:2012SIST EN 1744-1:2010+A1:2013en,fr,de01-februar-2013SIST EN 1744-1:2010+A1:2013SLOVENSKI
STANDARDSIST EN 1744-1:20101DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1744-1:2009+A1
November 2012 ICS 91.100.15 Supersedes EN 1744-1:2009English Version
Tests for chemical properties of aggregates - Part 1: Chemical analysis
Essais visant à déterminer les propriétés chimiques des granulats - Partie 1: Analyse chimique
Prüfverfahren für chemische Eigenschaften von Gesteinskörnungen - Teil 1: Chemische Analyse This European Standard was approved by CEN on 17 October 2009 and includes Amendment 1 approved by CEN on 15 October 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1744-1:2009+A1:2012: ESIST EN 1744-1:2010+A1:2013
Precision . 60SIST EN 1744-1:2010+A1:2013
EN 932-1, Tests for general properties of aggregates — Part 1: Methods for sampling EN 932-2, Tests for general properties of aggregates — Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates — Part 5: Common equipment and calibration EN 932-6, Tests for general properties of aggregates — Part 6: Definitions of repeatability and reproducibility EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size distribution — Test sieves, nominal size of apertures EN 1015-4, Methods of test for mortar for masonry — Part 4: Determination of consistence of fresh mortar (by plunger penetration) EN 1015-9, Methods of test for mortar for masonry — Part 9: Determination of workable life and correction time of fresh mortar EN 1015-11, Methods of test for mortar for masonry — Part 11: Determination of flexural and compressive strength of hardened mortar EN 1097-6, Tests for mechanical and physical properties of aggregates — Part 6: Determination of particle density and water absorption ISO 384:1978, Laboratory glassware — Principles of design and construction of volumetric glassware ISO 385, Laboratory glassware — Burettes SIST EN 1744-1:2010+A1:2013
NOTE 3 Unless otherwise stated reagent solutions may be assumed to have long-term stability. NOTE 4 All chemicals should be treated as potential poisons with toxic properties and appropriate precautions taken before their use. Always take time to assess possible hazards before starting any procedures and constant attention should be maintained. SIST EN 1744-1:2010+A1:2013
(16,987 ± 0,001) g of the dried silver nitrate, dissolving in water and diluting to 1 l in a volumetric flask (5.3.6). Store the solution in the amber-coloured glass reagent bottle (5.2.14) and protect from prolonged exposure to sunlight. 4.2.2 Thiocyanate (KSCN or NH4SCN) solution, approximately 0,1 mol/l, prepared by dissolving 9,7 g of potassium thiocyanate or 7,6 g ammonium thiocyanate in water and diluting to 1 l in a volumetric flask. Pipette 25 ml of silver nitrate solution (4.2.1) into a conical flask (5.3.5) and add 5 ml of nitric acid (4.2.3) and 1 ml of ammonium iron (III) sulfate indicator solution (4.2.5). Add the thiocyanate solution from a burette (5.2.13) until the first permanent colour change occurs, that is from white opalescence to pale brown. Note the volume of thiocyanate solution added. Calculate the concentration of the thiocyanate solution cT, (in mol/l), from the following equation: cT
=
2,5/V1 (1) where V1 is the volume of thiocyanate added (in ml). Standardize the solution at weekly intervals, or before use if the tests are less frequent. 4.2.3 Nitric acid (HNO3), approximately 6 mol/l, prepared by adding 100 ml of nitric acid (4.1) to 150 ml water, boiling the diluted acid in a fume cupboard (5.2.17) until it is colourless and leave to cool to room temperature. 4.2.4 Chloride free technical grade 3,5-trimethylhexan-1-ol. 4.2.5 Ammonium iron (III) sulfate NH4Fe(SO4)2.12H2O indicator solution, prepared by adding 60 g of water to 50 g ammonium iron (III) sulfate, warming to dissolve, and adding 10 ml nitric acid (4.2.3). Leave the solution to cool to room temperature and store in a glass bottle (5.2.15). SIST EN 1744-1:2010+A1:2013
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